JRENIGAR

iTrader: (37)

That would be good. Do you have any belt slip issues with that small of a pulley?

ss1

iTrader: (32)

No belt slip as far as I can tell. I'd go with a small pulley from the start because you're still not going to get a huge amount of boost. Start with a 2.75" and see where that puts you. If you want more, find a smaller pulley or have one made.

I see about 7 to 7.5lbs with a ported TB, LS6 intake, ported 241 heads, 222/230 cam, 1-3/4 headers, and dual 3" exhaust. The blower is pretty much maxed out.

The small silver canister thing you're talking about is probably a Vortech Maxflow Race Bypass valve. All of the Vortech kits come standard with the black plastic bypass valve previously mentioned and pictured above with the rubber hose attached that goes back into the blower inlet pipe.

JRENIGAR

iTrader: (37)

It might also be the fill reservoir as I have seen some made from metal instead of the black plastic vortech one.

yonerhottlt1

iTrader: (21)

Thanks for all of the info and being helpful. We're going to go ahead and put the 3.125 pulley on and see what it does. Looking to run speed density while keeping the lid setup. Beginning the install on Saturday so if we run into any problems or have any other questions or concerns I'll be sure to hit you up. Thanks again bro...

98BLOWNZ28

iTrader: (10)

i would say run atleast a 2.95 at the biggest. lol.
i ran a 2.75 with my g trim and make 8-9 psi.
im running a 3.47 with my t trim making about 12psi (8inch crank)

JRENIGAR

iTrader: (37)

Is it dyno tuned yet, if so what are the #'s?

yonerhottlt1

iTrader: (21)

So we got the car all finished up and got it dynotuned this past Saturday morning here in Sacramento and she made 420rwhp/390rwtq on the 1st pull at 6200 rpms and still pulling! It also made 9.7 lbs. of boost on the 3.125 pulley which was more than what we were expecting and the 38# injectors are at 102% duty cyle. Unfortunately, we could only make one pull on the dyno as we had a couple of minor leaks that are now fixed. The car runs great and has more in it for sure with more time on the dyno.

phatasp

iTrader: (11)

I also had to run a 2.75 to get 9lbs out of my g-trim

Thats pretty good numbers on a g-trim with that pulley. If your still on the stock shortblock I would,nt try to run much more boost than that.

LT1RAY

iTrader: (21)

Great numbers for a bone stock motor! What were the IAT's? It needs some long tubes now.

yonerhottlt1

iTrader: (21)

Thanks guys! I honestly have no idea what the intake air temps were but it was probably a 65 degree day whichis average for this time of year here. Car is completely bone stock and definitely has the sleeper affect to it. Only mods are a monster stage 3 clutch w/ tick adstable master cylinder, polyurethane motor and tranny mounts, racetronix 255 fuel pump w/ hotwire kit and a K & N filter. Next mods will be longtubes, LS6 intake manifold, ported throttle body w/bypass, and possibly a meth kit. Of course, a retune will follow

JRENIGAR

iTrader: (37)

Lets see a graph of the dyno run if you have one. Id like to see how your boost builds compared to mine.